921213

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 1467648

約数和(自身を除く): 546435

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 223, 243, 459, 669, 1377, 2007, 3791, 4131, 6021, 11373, 18063, 34119, 54189, 102357, 307071, 921213]

約数ペア:

[(1, 921213), (3, 307071), (9, 102357), (17, 54189), (27, 34119), (51, 18063), (81, 11373), (153, 6021), (223, 4131), (243, 3791), (459, 2007), (669, 1377)]